rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10499 ticks this GP) idle=f7b/1/0x4000000000000000 softirq=48844/48844 fqs=5113
(t=10500 jiffies g=78041 q=2595)
NMI backtrace for cpu 1
CPU: 1 PID: 24369 Comm: syz-executor.4 Not tainted 5.15.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x22d/0x390 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
rcu_pending kernel/rcu/tree.c:3880 [inline]
rcu_sched_clock_irq+0x1e33/0x2bc0 kernel/rcu/tree.c:2599
update_process_times+0x197/0x200 kernel/time/timer.c:1785
tick_sched_handle kernel/time/tick-sched.c:226 [inline]
tick_sched_timer+0x27d/0x420 kernel/time/tick-sched.c:1421
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:55 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x36/0x2f0 mm/kasan/generic.c:189
Code: 85 f6 0f 84 0d 02 00 00 48 89 fb 48 01 f3 0f 82 8d 02 00 00 48 89 fb 48 c1 eb 2f 81 fb fe ff 01 00 0f 86 7a 02 00 00 49 89 fc <49> c1 ec 03 49 b8 00 00 00 00 00 fc ff df 4f 8d 0c 04 4c 8d 54 37
RSP: 0018:ffffc9000471eb68 EFLAGS: 00000202
RAX: 1ffff920008e3e01 RBX: 000000000001ffff RCX: ffffffff81a55aa0
RDX: 0000000000000000 RSI: 0000000000000010 RDI: ffffc9000471eca0
RBP: ffffc9000471ed50 R08: ffffffff81a55a74 R09: ffffed100f94f47a
R10: ffffed100f94f47a R11: 0000000000000000 R12: ffffc9000471eca0
R13: 0000000000000010 R14: ffffc9000471eca0 R15: ffff88809b9cf608
memcpy+0x25/0x60 mm/kasan/shadow.c:65
memcpy_common kernel/events/internal.h:174 [inline]
__output_copy kernel/events/internal.h:178 [inline]
perf_output_read_group kernel/events/core.c:6928 [inline]
perf_output_read+0x1150/0x1480 kernel/events/core.c:6961
perf_output_sample+0x338/0x23e0 kernel/events/core.c:7008
__perf_event_output kernel/events/core.c:7493 [inline]
perf_event_output_forward+0x1e1/0x2c0 kernel/events/core.c:7507
__perf_event_overflow+0x1f8/0x380 kernel/events/core.c:9177
do_perf_sw_event kernel/events/core.c:9394 [inline]
___perf_sw_event+0x465/0x640 kernel/events/core.c:9425
__perf_sw_event+0x13f/0x270 kernel/events/core.c:9437
handle_mm_fault+0x21cc/0x2560 mm/memory.c:4806
do_user_addr_fault+0x8ce/0x10c0 arch/x86/mm/fault.c:1397
handle_page_fault arch/x86/mm/fault.c:1485 [inline]
exc_page_fault+0xa1/0x1e0 arch/x86/mm/fault.c:1541
asm_exc_page_fault+0x1e/0x30
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 0f 1f 80 00 00 00 00 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 83 f8
RSP: 0018:ffffc9000471f818 EFLAGS: 00050206
RAX: ffffffff84102e01 RBX: ffff888038fd0000 RCX: 0000000000007fcb
RDX: 0000000000008000 RSI: 0000000020fcd000 RDI: ffff888038fd0035
RBP: ffffc9000471f970 R08: dffffc0000000000 R09: ffffed10071fb000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000008000
R13: 00007ffffffff000 R14: 0000000020fccfcb R15: ffffc9000471fe68
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline]
copyin lib/iov_iter.c:168 [inline]
_copy_from_iter+0x33c/0x1080 lib/iov_iter.c:720
copy_from_iter include/linux/uio.h:162 [inline]
copy_from_iter_full include/linux/uio.h:168 [inline]
skb_do_copy_data_nocache+0x13f/0x3e0 include/net/sock.h:2113
skb_copy_to_page_nocache include/net/sock.h:2139 [inline]
tcp_sendmsg_locked+0x19b1/0x4120 net/ipv4/tcp.c:1361
tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1461
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg net/socket.c:724 [inline]
__sys_sendto+0x560/0x720 net/socket.c:2036
__do_sys_sendto net/socket.c:2048 [inline]
__se_sys_sendto net/socket.c:2044 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:2044
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f904a1a8a39
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f904771e188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f904a2abf60 RCX: 00007f904a1a8a39
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000006
RBP: 00007f904a202e8f R08: 0000000000000000 R09: 0000000000000053
R10: 00000000000003e8 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcbbc5101f R14: 00007f904771e300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 85 f6 test %esi,%esi
2: 0f 84 0d 02 00 00 je 0x215
8: 48 89 fb mov %rdi,%rbx
b: 48 01 f3 add %rsi,%rbx
e: 0f 82 8d 02 00 00 jb 0x2a1
14: 48 89 fb mov %rdi,%rbx
17: 48 c1 eb 2f shr $0x2f,%rbx
1b: 81 fb fe ff 01 00 cmp $0x1fffe,%ebx
21: 0f 86 7a 02 00 00 jbe 0x2a1
27: 49 89 fc mov %rdi,%r12
* 2a: 49 c1 ec 03 shr $0x3,%r12 <-- trapping instruction
2e: 49 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%r8
35: fc ff df
38: 4f 8d 0c 04 lea (%r12,%r8,1),%r9
3c: 4c rex.WR
3d: 8d .byte 0x8d
3e: 54 push %rsp
3f: 37 (bad)